Things You'll Need
Instructions
Start your Gameboy Advance emulator, but do not load Pokemon Shiny Gold. The program should be at its opening screen, which is typically black.
Open the emulator's Gameshark program, which is usually done by accessing the cheat section from the top toolbar of the emulator.
Input the codes you would like to use. The cheat codes can range from giving you a 100 copies of a particular item to instantly giving you a legendary Pokemon. All of the cheat codes from Pokemon FireRed can be used in the game.
Press "OK" to close the window.
Load Pokemon Shiny Gold and your saved games. The cheat codes will be automatically activated once the game starts.